Not sure about brutalized. The guy was a trojan. Pepper sprayed him and he took it like it was a shot of breath freshener. lol.
I don't know what was said before this occurred. If he was told to back the hell off and didn't, under the current circumstances, I don't blame the cops. You've punched your ticket to a free baton demonstration at that point, IMO.
they aren't 'cops' they aren't military either, although they are wearing uniforms meant for military & all they have is a patch saying 'police'. no official emblems & especially no names.
they are pseudo/para military that are from the bureau of prisons & customs & border patrol.
btw the CBP wanted to ( & it might have been eliminated already) get rid oflie detector tests for apllicants because the vast majority applying just 2-3 years ago were failing bigley.